LED street lamps are used on a large scale in cities. We often only say that LED street lamps are good, but not their shortcomings. In fact, its light is more dazzling than traditional street lamps. Before LED street lamps leave the factory, LED street lamp manufacturers need to treat them. Perform dimming processing. In recent years, the country has vigorously promoted smart city lighting life. LED street lamps have replaced traditional sodium lamp lighting systems as urban lighting. LED street lamps have gradually entered people with directional light, low power consumption, fast response speed, high earthquake resistance, long service life, and green environmental protection. The field of vision has become a new generation of energy-saving light source with the most advantages of replacing traditional light sources. So what are the commonly used dimming methods for LED street lights? 1. Leading edge phase cut (FPC) thyristor dimming. It uses a silicon controlled rectifier circuit, the input voltage is chopped, and the sine waveform is changed by adjusting the conduction angle of each half-wave of the alternating current, and the effective value of the alternating current is changed to adjust the brightness. The special advantages are high dimming precision, high efficiency, small size, light weight, and easy remote control. It is the most widely used dimming product with the most manufacturers. 2. Back-edge phase cut (RPC) MOS tube dimming. Made of field effect transistor (FET) or insulated gate bipolar transistor (IGBT) devices. Most of the MOSFETs are used as switching devices, so they are also called MOSFET dimmers (MOS tubes). This dimmer is a fully controlled switch, and the light can be controlled. The disadvantage is that the dimming circuit is relatively complicated, stable control is difficult, and the cost is high. . The dot trailing edge phase-cut dimmer applied to LED lighting equipment can achieve better performance on a single lighting equipment or a very small load, but it is not suitable for the engineering field. 3. DALI dimming. A DALI network has been defined in the DALI standard, including a maximum of 64 units (independent addresses), 16 groups and 16 scenes. Therefore, a DALL network can only control 21 full-color LEDs, which is not suitable for LED lighting system control. However, different lighting units on the DALI bus can be flexibly grouped to achieve different scene control and management, so it can be a subsystem that can be incorporated into other bus systems for use in large-scale lighting projects. 4. DMX512 dimming. Invented by USITT, from the console with a standard digital interface to the way to control the dimmer. DMX512 is more suitable for occasions where lamps are concentrated, such as stage lighting. 5. The 1-10V dimming device uses two independent circuits. The ordinary voltage circuit is used to turn on or off the power supply to the lighting equipment; the low-voltage control circuit provides a reference voltage to realize the dimming of the lamp, which is suitable for the dimming of the LED lighting. The disadvantage is that two lines need to be used, and the construction cost is relatively high. What are the commonly used dimming methods for LED street lights with led light tubes are shared here. Traditional circuits need to lay cables, which not only wastes time and labor, but also wastes valuable copper resources. And many criminals will steal the cables because the price of the cables is not unreasonable, thus destroying the street lights. In contrast, the operation of LED street lights is simple and convenient, and the use of LED street lights saves a lot of human and financial resources.